Infestation started in the small suite in the basement and slowly made its way to the main floor where an elderly couple have lived for 10+ years. By the time they realized what was happening the 2 basement suites where fully infested. The land lord didn't really what to believe it was bad but once evidence was produced she arranged for a company to spray.
Well months later they were still finding small pockets on the main floor. I lived on the top floor where they did not spray and it seems

they just moved upward. My hand is covered in welts from these bits. We moved as the landlord was not responsive and we didn't want an other year of bug frustration.